Airman 1st Class Steven Singleton, 28th Operation Support Squadron airfield management specialist, inputs information into an Air Force form 3616, daily log, during his daily duties at Airfield Management on Ellsworth Air Force Base, S.D., April 4, 2013. The daily events log must provide detailed information during shift-changes providing continuity and efficiency. (U.S. Air Force photo by Airman 1st Class Kate Thornton-Maurer/Released)